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https://git.alemi.dev/pc-monitor.git
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feat: reworked script with async loop
now allows async tasks with separate timers for different kind of packets: net and cpu leds are fast, display redraw is slow
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parent
e0aeb920d0
commit
4020bfeddb
1 changed files with 83 additions and 37 deletions
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@ -1,52 +1,98 @@
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#!/usr/bin/env python
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import asyncio
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import sys
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import struct
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import logging
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from time import sleep
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import serial
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import psutil
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def cpu_load_serial_driver(device:str, retry_interval:float=5.0):
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while True:
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try:
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port = serial.Serial(device, baudrate=57600)
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avg_usage_to_serial(port)
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except serial.SerialException as e:
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print(f"[!] Could not connect to device: {str(e)}", file=sys.stderr)
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else:
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port.close()
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sleep(retry_interval)
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class State:
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run: bool
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device: str
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baudrate: int
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loop: asyncio.AbstractEventLoop
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packets: asyncio.Queue
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_port: serial.Serial
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_task: asyncio.Task
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def avg_usage_to_serial(port:serial.Serial):
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net = psutil.net_io_counters()
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net_tx = net.bytes_sent
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net_rx = net.bytes_recv
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port.write(struct.pack("BB", 0, 0))
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port.flush()
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while True:
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# Map float [0:100] to int [0:255], square it to put more values in the lower end, where led is more sensible
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load = [ int(((x/100) **2) * 255) for x in psutil.cpu_percent(0.05, percpu=True) ] # mypy whines but percpu returns a list
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try:
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port.write(struct.pack("BBBBBB", 1, 4, *load))
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port.flush()
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except serial.SerialException as e:
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print(f"[!] Failed writing payload to device: {str(e)}", file=sys.stderr)
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break
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net = psutil.net_io_counters()
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try:
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port.write(struct.pack("BBBB", 2, 2, int(net.bytes_sent > net_tx), int(net.bytes_recv > net_rx)))
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port.flush()
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except serial.SerialException as e:
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print(f"[!] Failed writing payload to device: {str(e)}", file=sys.stderr)
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break
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net_rx = net.bytes_recv
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net_tx = net.bytes_sent
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def __init__(self, device:str="/dev/ttyUSB0", baudrate=57600):
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self.run = True
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self.baudrate = baudrate
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self.device = device
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self.packets = asyncio.Queue()
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self.port = None
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async def run_port_manager(self):
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while self.run:
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logging.debug("[*] Connecting to device '%s'", self.device)
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try:
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self.port = await self._loop.run_in_executor(None, serial.Serial, self.device, self.baudrate)
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await self._loop.run_in_executor(None, self.port.write, struct.pack("BB", 0, 0))
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while self.run:
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pkt = await self.packets.get()
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logging.debug("[>] Dispatching packet [ %s ]", str(pkt))
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await self._loop.run_in_executor(None, self.port.write, pkt)
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except serial.SerialException as e:
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logging.error("[!] Error operating with device: %s", str(e))
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except Exception as e:
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logging.exception("unhandled exception")
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self.run = False
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finally:
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if self.port:
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self.port.close()
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async def display_polling(self):
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rx = 0
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tx = 0
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while self.run:
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cpu_report = await self._loop.run_in_executor(None, psutil.cpu_percent, 1, True)
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load = [ int(((x/100) **2) * 255) for x in cpu_report ] # mypy whines but percpu returns a list
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net = psutil.net_io_counters(pernic=True)
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d_rx = sum(v.bytes_recv for k, v in net.items() if k != "lo")
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d_tx = sum(v.bytes_sent for k, v in net.items() if k != "lo")
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await self.packets.put(struct.pack("BBBBBBBB", 3, 6, *load, min(int((d_tx - tx) / 1000), 255), min(int((d_rx - rx) / 1000), 255)))
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rx = d_rx
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tx = d_tx
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async def cpu_load_leds(self):
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while self.run:
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cpu_report = await self._loop.run_in_executor(None, psutil.cpu_percent, 0.05, True)
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load = [ int(((x/100) **2) * 255) for x in cpu_report ] # mypy whines but percpu returns a list
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logging.info("CPU [%d|%d|%d|%d]", *load)
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await self.packets.put(struct.pack("BBBBBB", 1, 4, *load))
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async def net_traffic_leds(self):
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rx = 0
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tx = 0
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while self.run:
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net = psutil.net_io_counters(pernic=True)
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d_rx = sum(v.bytes_recv for k, v in net.items() if k != "lo")
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d_tx = sum(v.bytes_sent for k, v in net.items() if k != "lo")
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logging.info("NET [TX %d | %d RX]", d_tx - tx, d_rx - rx)
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await self.packets.put(struct.pack("BBBB", 2, 2, min(d_tx - tx, 255), min(d_rx - rx, 255)))
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rx = d_rx
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tx = d_tx
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await asyncio.sleep(0.01)
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async def run_tasks(self):
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self._loop = asyncio.get_event_loop()
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port_manager = self._loop.create_task(self.run_port_manager())
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cpu_leds = self._loop.create_task(self.cpu_load_leds())
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net_leds = self._loop.create_task(self.net_traffic_leds())
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display = self._loop.create_task(self.display_polling())
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await asyncio.gather(port_manager, cpu_leds, net_leds, display)
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if __name__ == "__main__":
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if len(sys.argv) < 2:
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print("[!] No device specified")
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logging.error("[!] No device specified")
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exit(-1)
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cpu_load_serial_driver(sys.argv[1])
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logging.basicConfig(level=logging.WARNING)
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state = State(sys.argv[1])
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asyncio.run(state.run_tasks())
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